<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<input type="time" />
		<input type="date" />
	</body>
</html>
<script>
	var a = [1,2];
    var b = [3,4];
    alert("a="+a.concat(b).slice(2));
    alert("b="+b.concat(a).slice(2));
    alert(a);
    alert(b);
 
var a = [1,2];
    var b = [3,4];
    function change(x,y){
        a = arguments[1];
        b = arguments[0];
    }
    change(a,b);
    alert(a);
    alert(b);
</script>